—Listen! Peter is singing in the classroom!
—It _____ be him. He has gone back to his hometown.
| A．must | B．mustn’t | C．may not | D．can’t |
We haven’t seen the film _______.
| A．already | B．yet | C．ever | D．never |
Miss Green isn't in the office. She _______ the library.
| A．has gone to | B．went to |
| C．has been to | D．has come to |
----Do you know the movie Lost in Thailand?
----Yes. I _______ it twice. It’s funny.
| A．saw | B．see | C．have seen | D．will see |
Take an umbrella _______ you won’t get wet.
| A．so that | B．in order to | C．or | D．because |
The Monkey King keeps fighting to help _______ weak.
| A．a | B．an | C．the | D．/ |